login: panic: malloc: allocation too large, tpyapnei c:= k2e, rsniezle di=a g1n8o4s4t6i7c4 assertion "!_kernel_lock_held()" failed: file "/syzkaller/managers/multicore/kernel/sys/kern/kern_fork.c", line 690 Stopped at db_enter+0x18: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND 202640 59512 0 0 0x4000000 0 syz-executor.1 *464703 2369 0 0 0x4000000 1 syz-executor.0 db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:398 panic() at panic+0x15c sys/kern/subr_prf.c:207 __assert(ffffffff8220219d,ffffffff821ee8cd,2b2,ffffffff821d0e7f) at __assert+0x2b sys/kern/subr_prf.c:154 proc_trampoline_mp() at proc_trampoline_mp+0x123 end trace frame: 0x0, count: 11 https://www.openbsd.org/ddb.html describes the minimum info required in bug reports. Insufficient info makes it difficult to find and fix bugs. ddb{1}> ddb{1}> set $lines = 0 ddb{1}> set $maxwidth = 0 ddb{1}> show panic malloc: allocation too large, type = 2, size = 18446744073709550016 ddb{1}> trace db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:398 panic() at panic+0x15c sys/kern/subr_prf.c:207 __assert(ffffffff8220219d,ffffffff821ee8cd,2b2,ffffffff821d0e7f) at __assert+0x2b sys/kern/subr_prf.c:154 proc_trampoline_mp() at proc_trampoline_mp+0x123 end trace frame: 0x0, count: -4 ddb{1}> show registers rdi 0 rsi 0x1 rbp 0xffff800022775b70 rbx 0xffff800022775c20 rdx 0xffff800020acf660 rcx 0 rax 0 r8 0xffffffff81dbebdf kprintf+0x16f r9 0x1 r10 0x25 r11 0xa54b4cdbe7da2653 r12 0x3000000008 r13 0xffff800022775b80 r14 0x104 r15 0x1 rip 0xffffffff81e59458 db_enter+0x18 cs 0x8 rflags 0x246 rsp 0xffff800022775b60 ss 0x10 db_enter+0x18: addq $0x8,%rsp ddb{1}> show proc PROC (syz-executor.0) pid=464703 stat=onproc flags process=0 proc=4000000 pri=79, usrpri=79, nice=20 forw=0xffffffffffffffff, list=0xffff800020acfb50,0xffffffff8262fc50 process=0xffff800020a8b890 user=0xffff800022770000, vmspace=0xfffffd807f00c5c0 estcpu=36, cpticks=1, pctcpu=0.0 user=0, sys=1, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 59512 39046 20475 0 2 0 syz-executor.1 59512 202640 20475 0 7 0x4000000 syz-executor.1 2369 48654 55106 0 2 0 syz-executor.0 2369 518885 55106 0 3 0x4000080 fsleep syz-executor.0 * 2369 464703 55106 0 7 0x4000000 syz-executor.0 55106 337805 98150 0 3 0x82 nanosleep syz-executor.0 20475 165495 98150 0 3 0x82 nanosleep syz-executor.1 38729 203006 1 0 3 0x100083 ttyin getty 41762 30192 0 0 3 0x14200 acct acct 22494 280303 0 0 3 0x14200 bored sosplice 98150 143195 87326 0 3 0x82 thrsleep syz-fuzzer 98150 51439 87326 0 3 0x4000082 nanosleep syz-fuzzer 98150 277916 87326 0 3 0x4000082 thrsleep syz-fuzzer 98150 311052 87326 0 3 0x4000082 thrsleep syz-fuzzer 98150 311505 87326 0 3 0x4000082 thrsleep syz-fuzzer 98150 310704 87326 0 3 0x4000082 thrsleep syz-fuzzer 98150 507886 87326 0 3 0x4000082 kqread syz-fuzzer 98150 115016 87326 0 3 0x4000082 thrsleep syz-fuzzer 98150 133596 87326 0 3 0x4000082 thrsleep syz-fuzzer 98150 66850 87326 0 3 0x4000082 thrsleep syz-fuzzer 87326 216114 9300 0 3 0x10008a pause ksh 9300 50453 28627 0 3 0x92 select sshd 28627 276344 1 0 3 0x80 select sshd 17880 77315 60251 74 3 0x100092 bpf pflogd 60251 318139 1 0 3 0x80 netio pflogd 64070 360816 95453 73 3 0x100090 kqread syslogd 95453 519939 1 0 3 0x100082 netio syslogd 72391 71781 1 77 3 0x100090 poll dhclient 55189 518866 1 0 3 0x80 poll dhclient 53932 169554 0 0 2 0x14200 zerothread 38740 58253 0 0 3 0x14200 aiodoned aiodoned 17489 3753 0 0 3 0x14200 syncer update 38891 393836 0 0 3 0x14200 cleaner cleaner 59978 443413 0 0 3 0x14200 reaper reaper 2190 374560 0 0 3 0x14200 pgdaemon pagedaemon 7658 185490 0 0 3 0x14200 bored crynlk 1196 325425 0 0 3 0x14200 bored crypto 63141 241787 0 0 3 0x40014200 acpi0 acpi0 33329 463976 0 0 3 0x40014200 idle1 64133 146674 0 0 3 0x14200 bored softnet 77399 487972 0 0 3 0x14200 bored systqmp 72032 461517 0 0 3 0x14200 bored systq 79237 437741 0 0 3 0x40014200 bored softclock 31124 154381 0 0 3 0x40014200 idle0 75075 516259 0 0 3 0x14200 bored smr 1 100341 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{1}> show all locks Process 59512 (syz-executor.1) thread 0xffff800020acfb50 (202640) shared rwlock vmlistlock r = 0 (0xffff80000066e478) #0 witness_lock+0x52e sys/kern/subr_witness.c:1163 #1 vm_get_info+0x39 sys/arch/amd64/amd64/vmm.c:3712 #2 VOP_IOCTL+0x88 sys/kern/vfs_vops.c:291 #3 vn_ioctl+0xb7 sys/kern/vfs_vnops.c:524 #4 sys_ioctl+0x5b9 #5 syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:92 [inline] #5 syscall+0x4a4 sys/arch/amd64/amd64/trap.c:555 #6 Xsyscall+0x128 exclusive kernel_lock &kernel_lock r = 0 (0xffffffff82663928) #0 witness_lock+0x52e sys/kern/subr_witness.c:1163 #1 syscall+0x400 mi_syscall sys/sys/syscall_mi.h:83 [inline] #1 syscall+0x400 sys/arch/amd64/amd64/trap.c:555 #2 Xsyscall+0x128 ddb{1}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim Kern Lim devbuf 9646 6676K 7718K 78643K 24430 0 0 pcb 13 8K 8K 78643K 758 0 0 rtable 111 12K 13K 78643K 2046 0 0 ifaddr 97 21K 22K 78643K 698 0 0 counters 39 33K 33K 78643K 39 0 0 ioctlops 0 0K 4K 78643K 1691 0 0 iov 0 0K 20K 78643K 631 0 0 mount 1 1K 1K 78643K 1 0 0 vnodes 1206 76K 77K 78643K 7346 0 0 UFS quota 1 32K 32K 78643K 1 0 0 UFS mount 5 36K 36K 78643K 5 0 0 shm 2 1K 5K 78643K 94 0 0 VM map 2 1K 1K 78643K 12 0 0 sem 12 0K 0K 78643K 852 0 0 dirhash 12 2K 2K 78643K 12 0 0 ACPI 1808 196K 290K 78643K 12765 0 0 file desc 6 17K 25K 78643K 6051 0 0 sigio 0 0K 0K 78643K 53 0 0 proc 62 63K 83K 78643K 1804 0 0 subproc 32 2K 2K 78643K 408 0 0 NFS srvsock 1 0K 0K 78643K 1 0 0 NFS daemon 1 16K 16K 78643K 1 0 0 ip_moptions 0 0K 0K 78643K 526 0 0 in_multi 29 1K 2K 78643K 419 0 0 ether_multi 1 0K 0K 78643K 26 0 0 mrt 2 0K 0K 78643K 33 0 0 ISOFS mount 1 32K 32K 78643K 1 0 0 MSDOSFS mount 1 16K 16K 78643K 1 0 0 ttys 96 424K 424K 78643K 96 0 0 exec 0 0K 1K 78643K 969 0 0 pfkey data 0 0K 4K 78643K 2 0 0 pagedep 1 8K 8K 78643K 1 0 0 inodedep 1 32K 32K 78643K 1 0 0 newblk 1 0K 0K 78643K 1 0 0 VM swap 7 26K 26K 78643K 7 0 0 UVM amap 130 23K 32K 78643K 21544 0 0 UVM aobj 130 6K 6K 78643K 142 0 0 memdesc 1 4K 4K 78643K 1 0 0 crypto data 1 1K 1K 78643K 1 0 0 ip6_options 0 0K 1K 78643K 716 0 0 NDP 24 0K 1K 78643K 215 0 0 temp 259 3557K 4197K 78643K 134648 0 0 kqueue 0 0K 0K 78643K 34 0 0 SYN cache 2 16K 16K 78643K 2 0 0 ddb{1}> show all pools Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle arp 64 56 0 50 1 0 1 1 0 8 0 plcache 128 20 0 0 1 0 1 1 0 8 0 rtpcb 80 300 0 298 1 0 1 1 0 8 0 rtentry 112 266 0 226 2 0 2 2 0 8 0 unpcb 120 2141 0 2123 3 1 2 2 0 8 1 syncache 264 4 0 4 1 1 0 1 0 8 0 sackhl 24 2 0 2 2 2 0 1 0 8 0 tcpqe 32 5357 0 5357 1 1 0 1 0 8 0 tcpcb 544 5491 0 5487 8 7 1 2 0 8 0 inpcb 280 8386 0 8379 11 10 1 2 0 8 0 rttmr 72 7 0 7 6 6 0 1 0 8 0 ip6q 72 1 0 1 1 1 0 1 0 8 0 ip6af 40 1 0 1 1 1 0 1 0 8 0 nd6 48 40 0 37 1 0 1 1 0 8 0 pkpcb 40 33 0 33 10 10 0 1 0 8 0 ppxss 1128 99 0 99 15 14 1 1 0 8 1 pffrag 232 1 0 1 1 1 0 1 0 482 0 pffrnode 88 1 0 1 1 1 0 1 0 8 0 pffrent 40 2 0 2 1 1 0 1 0 8 0 pfosfp 40 846 0 846 5 5 0 5 0 8 0 pfosfpen 112 1428 0 1428 21 21 0 21 0 8 0 pfstitem 24 142 0 120 1 0 1 1 0 8 0 pfstkey 112 142 0 120 1 0 1 1 0 8 0 pfstate 328 142 0 120 3 0 3 3 0 8 0 pfrule 1360 21 0 16 2 1 1 2 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 1078 0 877 18 3 15 15 0 8 0 art_table 32 1079 0 877 2 0 2 2 0 8 0 art_node 16 253 0 216 1 0 1 1 0 8 0 semupl 112 4 0 4 1 1 0 1 0 8 0 semapl 112 850 0 840 1 0 1 1 0 8 0 shmpl 112 140 0 12 5 1 4 4 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino1pl 128 11109 0 9692 46 0 46 46 0 8 0 ffsino 272 11109 0 9692 95 0 95 95 0 8 0 nchpl 144 20934 0 20464 61 41 20 61 0 8 0 uvmvnodes 72 6442 0 0 118 0 118 118 0 8 0 vnodes 208 6442 0 0 340 0 340 340 0 8 0 namei 1024 75661 0 75661 3 2 1 1 0 8 1 percpumem 16 30 0 0 1 0 1 1 0 8 0 vmpool 552 10 0 10 4 4 0 1 0 8 0 scsiplug 64 8 0 8 5 5 0 1 0 8 0 scxspl 192 54635 0 54635 27 24 3 7 0 8 3 plimitpl 152 527 0 519 1 0 1 1 0 8 0 sigapl 432 6188 0 6172 3 1 2 3 0 8 0 futexpl 56 121756 0 121755 1 0 1 1 0 8 0 knotepl 112 1237 0 1218 3 2 1 3 0 8 0 kqueuepl 104 1183 0 1181 1 0 1 1 0 8 0 pipepl 112 3016 0 2997 8 6 2 2 0 8 1 fdescpl 488 6189 0 6172 3 0 3 3 0 8 0 filepl 152 51823 0 51719 17 11 6 7 0 8 2 lockfpl 104 1909 0 1908 1 0 1 1 0 8 0 lockfspl 48 639 0 638 1 0 1 1 0 8 0 sessionpl 112 43 0 32 1 0 1 1 0 8 0 pgrppl 48 1636 0 1625 1 0 1 1 0 8 0 ucredpl 96 10872 0 10862 1 0 1 1 0 8 0 zombiepl 144 6174 0 6174 3 2 1 1 0 8 1 processpl 896 6208 0 6174 4 0 4 4 0 8 0 procpl 632 19640 0 19594 6 1 5 5 0 8 0 srpgc 64 46 0 46 16 15 1 1 0 8 1 sosppl 128 79 0 79 15 15 0 1 0 8 0 sockpl 384 10948 0 10921 13 8 5 5 0 8 1 mcl64k 65536 19 0 0 3 0 3 3 0 8 0 mcl16k 16384 17 0 0 3 0 3 3 0 8 0 mcl12k 12288 17 0 0 2 0 2 2 0 8 0 mcl9k 9216 17 0 0 2 0 2 2 0 8 0 mcl8k 8192 21 0 0 3 1 2 3 0 8 0 mcl4k 4096 26 0 0 3 0 3 3 0 8 0 mcl2k2 2112 11 0 0 1 0 1 1 0 8 0 mcl2k 2048 123 0 0 13 0 13 13 0 8 0 mtagpl 80 39 0 0 1 0 1 1 0 8 0 mbufpl 256 338 0 0 12 2 10 10 0 8 0 bufpl 256 20416 0 13368 441 0 441 441 0 8 0 anonpl 16 582959 0 571625 175 111 64 76 0 124 0 amapchunkpl 152 40123 0 39991 60 53 7 20 0 158 1 amappl16 192 29662 0 28869 155 113 42 52 0 8 2 amappl15 184 282 0 282 4 4 0 1 0 8 0 amappl14 176 809 0 808 2 1 1 1 0 8 0 amappl13 168 1561 0 1559 4 3 1 1 0 8 0 amappl12 160 984 0 983 1 0 1 1 0 8 0 amappl11 152 466 0 448 1 0 1 1 0 8 0 amappl10 144 1156 0 1149 1 0 1 1 0 8 0 amappl9 136 1559 0 1551 1 0 1 1 0 8 0 amappl8 128 1117 0 1081 2 0 2 2 0 8 0 amappl7 120 1282 0 1274 1 0 1 1 0 8 0 amappl6 112 423 0 410 1 0 1 1 0 8 0 amappl5 104 1272 0 1258 1 0 1 1 0 8 0 amappl4 96 5797 0 5765 1 0 1 1 0 8 0 amappl3 88 1974 0 1968 1 0 1 1 0 8 0 amappl2 80 48751 0 48671 4 2 2 3 0 8 0 amappl1 72 145407 0 144950 27 17 10 20 0 8 0 amappl 80 20271 0 20226 2 0 2 2 0 84 0 dma4096 4096 1 0 1 1 1 0 1 0 8 0 dma256 256 6 0 6 1 1 0 1 0 8 0 dma64 64 259 0 259 1 1 0 1 0 8 0 dma32 32 7 0 7 1 1 0 1 0 8 0 dma16 16 17 0 17 1 1 0 1 0 8 0 aobjpl 64 141 0 12 3 0 3 3 0 8 0 uaddrrnd 24 6199 0 6172 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 6199 0 6172 1 0 1 1 0 8 0 vmmpekpl 168 49662 0 49625 2 0 2 2 0 8 0 vmmpepl 168 765277 0 763220 317 202 115 115 0 357 24 vmsppl 368 6188 0 6172 2 0 2 2 0 8 0 pdppl 4096 12405 0 12364 7 1 6 6 0 8 0 pvpl 32 1577522 0 1562885 361 210 151 187 0 265 4 pmappl 232 6198 0 6182 4 3 1 2 0 8 0 extentpl 40 41 0 26 1 0 1 1 0 8 0 phpool 112 619 0 19 18 0 18 18 0 8 0